[fpc-devel] Performance of string handling in trunk
mschnell at lumino.de
Wed Jun 26 10:46:36 CEST 2013
On 06/26/2013 09:41 AM, Michael Schnell wrote:
> It shows ... how it is done.
You might be inclined to enhance the test program for me and compile it
AFAI understand the encoding type and as I see in
TRefStringRec= packed record
Encoding: word; // encoding of string
ElementSize: byte; // size in bytes of string's element (1-4)
Ref: SizeInt; // number of references
Len: SizeInt; // number of elements is string
(In fact I suppose that a dummy byte is inserted to prevent that the SizeInt types are misaligned)
The encoding type information should be just before the ref counter and thus adding something like
v1 := PInteger(j1-12);
v2 := PInteger(j2-12);
And printing this in hex should show this information.
Now you could test in the newest DXE version what happens when assigning a normal string to a RawByteString and vice versa.
Thanks for helping out...
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